Home / 7,149.56-10,727.40-2,990.54

Finding the Fourth Proportional to 7,149.56, 10,727.40 and 2,990.54

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Solution

The fourth proportional to 7,149.56, 10,727.40 and 2,990.54 is: 4,487.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.56 : 10,727.40 = 2,990.54 : x
  2. Step 2: Convert to fraction form
    7,149.56/10,727.40 = 2,990.54/x
  3. Step 3: Cross multiply
    7,149.56x = 10,727.40 × 2,990.54
  4. Step 4: Simplify right side
    7,149.56x = 32,080,718.80
  5. Step 5: Solve for x
    x = 32,080,718.80/7,149.56
  6. Step 6: Final answer
    x = 4,487.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.